Add all of the dry ingredients (flour, sugar, baking powder + soda, salt) to a large bowl. Whisk until well combined.
Carefully separate egg yolk and egg white.
Mash banana in a bowl until smooth.
Make a well in the center of the dry ingredients. Add the egg yolk to the center and whisk well.
Then add all of the other wet ingredients (applesauce, vanilla extract, olive oil, mashed banana).
Stir with a spatula until just combined (don't over stir to avoid a dense and gooey muffin texture).
Beat egg whites on medium speed with a hand or a stand mixer until you can see stiff peaks forming (see step-by-step photos).
Gently fold in whipped egg whites to the muffin batter.
Add in walnuts. Scoop muffin batter (I used a cookie scoop) into a muffin tin lined with muffins liners.
Bake for 18-20 minutes or until a toothpick comes out clean. Transfer to a cooling rack and let cool completely.
Video
Notes
Flour: Fo best results I recommend using 1 cup all-purpose flour and ⅓ cup whole wheat flour. If you use more whole wheat flour, the muffins will be much denser.
Ripe Bananas: To ensure that the muffins are sweet and strongly flavored, use very ripe bananas with lots of brown spots.
Measure banana: For best results, measure the exact amount of mashed bananas needed using a cup or scale.
Oil-Free: For completely oil-free muffins, add 4 tablespoon of applesauce instead. The texture will be a bit different though.
Sweetness: These muffins are lightly sweetened- for sweeter muffins, add ½ a cup of sugar instead of ⅓.
To store: Store any leftover muffins in an airtight container in the fridge for up to 3 days or at room temperature for up to 2 days.
To freeze: Freeze in a freezer-friendly container for up to 1 month. Let thaw on the counter overnight.
All nutritional information is based on third-party calculations and should be considered estimates.
Tried this recipe?Leave a rating and comment telling us how you liked it! Or tag @wholefoodsoulfood__kitchen on Instagram so we can admire your creations!